Firearm attachment



FIG. 1 is a front perspective view of a firearm attachment showing the new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front side elevational view thereof; and

FIG. 8 is a rear side elevational view thereof; and,

FIG. 9 is a right side elevational view of the firearm attachment mounted on an example firearm.

The broken lines in the drawings illustrate environmental features and form no part of the claimed design. 

CLAIM The ornamental design for a firearm attachment, as shown and described. 